#MatchAnalysis.py
from random import random
def printIntro():
    print("这个程序模拟两个选手A和B的某种竞技比赛")
    print("程序运行需要A和B的能力值（以0到1之间的小数表示）")
def getInputs():
    a = eval(input("请输入选手A的能力值（0-1):"))
    b = eval(input("请输入选手B的能力值（0-1):"))
    n = eval(input("模拟比赛的场次："))
    return a,b,n
def simNGames(n,probA,probB):
    winsA , winsB = 0,0
    for i in range(n):
        scoreA , scoreB = simOneGame(probA,probB)
        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1
    return winsA,winsB
def gameOver(a,b):
    return a == 15 or b == 15
def simOneGame(probB, probA):
    scoreA,scoreB = 0 , 0
    serving  ="A"
    while not gameOver(scoreA,scoreB):
        if serving == "A":
            if random() < probA:
                scoreA += 1
            else:
                serving ="B"
        else:
            if random() < probB:
                scoreB += 1
            else:
                serving ="A"
    return scoreA,scoreB
def printSummary(winsA,winsB):
    n = winsA + winsB
    print("竞技分析开始，共模拟{}场比赛".format(n))
    print("选手A获胜{}场比赛，占比{：0.1%}".format(winsA,winsA/n))
    print("选手B获胜{}场比赛，占比{:0.1%}".format(winsB,winsB/n))
def main():
    printIntro()
    probA,probB,n = getInputs()
    winsA,winsB = simNGames(n,probA,probB)
    printSummary(winsA,winsB)
main()